Initial support to add other languages to flatbuffers

CMakeLists.txt

@@ -44,6 +44,7 @@ set(FlatBuffers_Compiler_SRCS
   src/idl_gen_fbs.cpp
   src/idl_gen_grpc.cpp
   src/flatc.cpp
+  grpc/src/compiler/schema_interface.h
   grpc/src/compiler/cpp_generator.h
   grpc/src/compiler/cpp_generator.cc
 )

grpc/src/compiler/cpp_generator.cc

@@ -67,7 +67,8 @@ grpc::string FilenameIdentifier(const grpc::string &filename) {
 template<class T, size_t N>
 T *array_end(T (&array)[N]) { return array + N; }
 
-void PrintIncludes(Printer *printer, const std::vector<grpc::string>& headers, const Parameters &params) {
+void PrintIncludes(grpc_generator::Printer *printer, 
+                   const std::vector<grpc::string>& headers, const Parameters &params) {
   std::map<grpc::string, grpc::string> vars;
 
   vars["l"] = params.use_system_headers ? '<' : '"';
@@ -86,7 +87,7 @@ void PrintIncludes(Printer *printer, const std::vector<grpc::string>& headers, c
   }
 }
 
-grpc::string GetHeaderPrologue(File *file, const Parameters & /*params*/) {
+grpc::string GetHeaderPrologue(grpc_generator::File *file, const Parameters & /*params*/) {
   grpc::string output;
   {
     // Scope the output stream so it closes and finalizes output to the string.
@@ -111,7 +112,7 @@ grpc::string GetHeaderPrologue(File *file, const Parameters & /*params*/) {
   return output;
 }
 
-grpc::string GetHeaderIncludes(File *file,
+grpc::string GetHeaderIncludes(grpc_generator::File *file,
                                const Parameters &params) {
   grpc::string output;
   {
@@ -154,7 +155,7 @@ grpc::string GetHeaderIncludes(File *file,
 }
 
 void PrintHeaderClientMethodInterfaces(
-    Printer *printer, const Method *method,
+    grpc_generator::Printer *printer, const grpc_generator::Method *method,
     std::map<grpc::string, grpc::string> *vars, bool is_public) {
   (*vars)["Method"] = method->name();
   (*vars)["Request"] = method->input_type_name();
@@ -303,8 +304,8 @@ void PrintHeaderClientMethodInterfaces(
   }
 }
 
-void PrintHeaderClientMethod(Printer *printer,
-                             const Method *method,
+void PrintHeaderClientMethod(grpc_generator::Printer *printer,
+                             const grpc_generator::Method *method,
                              std::map<grpc::string, grpc::string> *vars,
                              bool is_public) {
   (*vars)["Method"] = method->name();
@@ -445,13 +446,13 @@ void PrintHeaderClientMethod(Printer *printer,
   }
 }
 
-void PrintHeaderClientMethodData(Printer *printer, const Method *method,
+void PrintHeaderClientMethodData(grpc_generator::Printer *printer, const grpc_generator::Method *method,
                                  std::map<grpc::string, grpc::string> *vars) {
   (*vars)["Method"] = method->name();
   printer->Print(*vars, "const ::grpc::RpcMethod rpcmethod_$Method$_;\n");
 }
 
-void PrintHeaderServerMethodSync(Printer *printer, const Method *method,
+void PrintHeaderServerMethodSync(grpc_generator::Printer *printer, const grpc_generator::Method *method,
                                  std::map<grpc::string, grpc::string> *vars) {
   (*vars)["Method"] = method->name();
   (*vars)["Request"] = method->input_type_name();
@@ -483,8 +484,8 @@ void PrintHeaderServerMethodSync(Printer *printer, const Method *method,
 }
 
 void PrintHeaderServerMethodAsync(
-    Printer *printer,
-    const Method *method,
+    grpc_generator::Printer *printer,
+    const grpc_generator::Method *method,
     std::map<grpc::string, grpc::string> *vars) {
   (*vars)["Method"] = method->name();
   (*vars)["Request"] = method->input_type_name();
@@ -599,8 +600,8 @@ void PrintHeaderServerMethodAsync(
 }
 
 void PrintHeaderServerMethodGeneric(
-    Printer *printer,
-    const Method *method,
+    grpc_generator::Printer *printer,
+    const grpc_generator::Method *method,
     std::map<grpc::string, grpc::string> *vars) {
   (*vars)["Method"] = method->name();
   (*vars)["Request"] = method->input_type_name();
@@ -669,8 +670,8 @@ void PrintHeaderServerMethodGeneric(
   printer->Print(*vars, "};\n");
 }
 
-void PrintHeaderService(Printer *printer,
-                        const Service *service,
+void PrintHeaderService(grpc_generator::Printer *printer,
+                        const grpc_generator::Service *service,
                         std::map<grpc::string, grpc::string> *vars) {
   (*vars)["Service"] = service->name();
 
@@ -764,7 +765,7 @@ void PrintHeaderService(Printer *printer,
   printer->Print("};\n");
 }
 
-grpc::string GetHeaderServices(File *file,
+grpc::string GetHeaderServices(grpc_generator::File *file,
                                const Parameters &params) {
   grpc::string output;
   {
@@ -795,7 +796,7 @@ grpc::string GetHeaderServices(File *file,
   return output;
 }
 
-grpc::string GetHeaderEpilogue(File *file, const Parameters & /*params*/) {
+grpc::string GetHeaderEpilogue(grpc_generator::File *file, const Parameters & /*params*/) {
   grpc::string output;
   {
     // Scope the output stream so it closes and finalizes output to the string.
@@ -821,7 +822,7 @@ grpc::string GetHeaderEpilogue(File *file, const Parameters & /*params*/) {
   return output;
 }
 
-grpc::string GetSourcePrologue(File *file, const Parameters & /*params*/) {
+grpc::string GetSourcePrologue(grpc_generator::File *file, const Parameters & /*params*/) {
   grpc::string output;
   {
     // Scope the output stream so it closes and finalizes output to the string.
@@ -845,7 +846,7 @@ grpc::string GetSourcePrologue(File *file, const Parameters & /*params*/) {
   return output;
 }
 
-grpc::string GetSourceIncludes(File *file,
+grpc::string GetSourceIncludes(grpc_generator::File *file,
                                const Parameters &params) {
   grpc::string output;
   {
@@ -880,8 +881,8 @@ grpc::string GetSourceIncludes(File *file,
   return output;
 }
 
-void PrintSourceClientMethod(Printer *printer,
-                             const Method *method,
+void PrintSourceClientMethod(grpc_generator::Printer *printer,
+                             const grpc_generator::Method *method,
                              std::map<grpc::string, grpc::string> *vars) {
   (*vars)["Method"] = method->name();
   (*vars)["Request"] = method->input_type_name();
@@ -981,8 +982,8 @@ void PrintSourceClientMethod(Printer *printer,
   }
 }
 
-void PrintSourceServerMethod(Printer *printer,
-                             const Method *method,
+void PrintSourceServerMethod(grpc_generator::Printer *printer,
+                             const grpc_generator::Method *method,
                              std::map<grpc::string, grpc::string> *vars) {
   (*vars)["Method"] = method->name();
   (*vars)["Request"] = method->input_type_name();
@@ -1040,8 +1041,8 @@ void PrintSourceServerMethod(Printer *printer,
   }
 }
 
-void PrintSourceService(Printer *printer,
-                        const Service *service,
+void PrintSourceService(grpc_generator::Printer *printer,
+                        const grpc_generator::Service *service,
                         std::map<grpc::string, grpc::string> *vars) {
   (*vars)["Service"] = service->name();
 
@@ -1153,7 +1154,7 @@ void PrintSourceService(Printer *printer,
   }
 }
 
-grpc::string GetSourceServices(File *file,
+grpc::string GetSourceServices(grpc_generator::File *file,
                                const Parameters &params) {
   grpc::string output;
   {
@@ -1182,7 +1183,7 @@ grpc::string GetSourceServices(File *file,
   return output;
 }
 
-grpc::string GetSourceEpilogue(File *file, const Parameters & /*params*/) {
+grpc::string GetSourceEpilogue(grpc_generator::File *file, const Parameters & /*params*/) {
   grpc::string temp;
 
   if (!file->package().empty()) {

grpc/src/compiler/cpp_generator.h

@@ -41,16 +41,7 @@
 #include <memory>
 #include <vector>
 
-#ifndef GRPC_CUSTOM_STRING
-#include <string>
-#define GRPC_CUSTOM_STRING std::string
-#endif
-
-namespace grpc {
-
-typedef GRPC_CUSTOM_STRING string;
-
-}  // namespace grpc
+#include "src/compiler/schema_interface.h"
 
 namespace grpc_cpp_generator {
 
@@ -64,83 +55,29 @@ struct Parameters {
   grpc::string grpc_search_path;
 };
 
-// An abstract interface representing a method.
-struct Method {
-  virtual ~Method() {}
-
-  virtual grpc::string name() const = 0;
-
-  virtual grpc::string input_type_name() const = 0;
-  virtual grpc::string output_type_name() const = 0;
-
-  virtual bool NoStreaming() const = 0;
-  virtual bool ClientOnlyStreaming() const = 0;
-  virtual bool ServerOnlyStreaming() const = 0;
-  virtual bool BidiStreaming() const = 0;
-};
-
-// An abstract interface representing a service.
-struct Service {
-  virtual ~Service() {}
-
-  virtual grpc::string name() const = 0;
-
-  virtual int method_count() const = 0;
-  virtual std::unique_ptr<const Method> method(int i) const = 0;
-};
-
-struct Printer {
-  virtual ~Printer() {}
-
-  virtual void Print(const std::map<grpc::string, grpc::string> &vars,
-                     const char *template_string) = 0;
-  virtual void Print(const char *string) = 0;
-  virtual void Indent() = 0;
-  virtual void Outdent() = 0;
-};
-
-// An interface that allows the source generated to be output using various
-// libraries/idls/serializers.
-struct File {
-  virtual ~File() {}
-
-  virtual grpc::string filename() const = 0;
-  virtual grpc::string filename_without_ext() const = 0;
-  virtual grpc::string message_header_ext() const = 0;
-  virtual grpc::string service_header_ext() const = 0;
-  virtual grpc::string package() const = 0;
-  virtual std::vector<grpc::string> package_parts() const = 0;
-  virtual grpc::string additional_headers() const = 0;
-
-  virtual int service_count() const = 0;
-  virtual std::unique_ptr<const Service> service(int i) const = 0;
-
-  virtual std::unique_ptr<Printer> CreatePrinter(grpc::string *str) const = 0;
-};
-
 // Return the prologue of the generated header file.
-grpc::string GetHeaderPrologue(File *file, const Parameters &params);
+grpc::string GetHeaderPrologue(grpc_generator::File *file, const Parameters &params);
 
 // Return the includes needed for generated header file.
-grpc::string GetHeaderIncludes(File *file, const Parameters &params);
+grpc::string GetHeaderIncludes(grpc_generator::File *file, const Parameters &params);
 
 // Return the includes needed for generated source file.
-grpc::string GetSourceIncludes(File *file, const Parameters &params);
+grpc::string GetSourceIncludes(grpc_generator::File *file, const Parameters &params);
 
 // Return the epilogue of the generated header file.
-grpc::string GetHeaderEpilogue(File *file, const Parameters &params);
+grpc::string GetHeaderEpilogue(grpc_generator::File *file, const Parameters &params);
 
 // Return the prologue of the generated source file.
-grpc::string GetSourcePrologue(File *file, const Parameters &params);
+grpc::string GetSourcePrologue(grpc_generator::File *file, const Parameters &params);
 
 // Return the services for generated header file.
-grpc::string GetHeaderServices(File *file, const Parameters &params);
+grpc::string GetHeaderServices(grpc_generator::File *file, const Parameters &params);
 
 // Return the services for generated source file.
-grpc::string GetSourceServices(File *file, const Parameters &params);
+grpc::string GetSourceServices(grpc_generator::File *file, const Parameters &params);
 
 // Return the epilogue of the generated source file.
-grpc::string GetSourceEpilogue(File *file, const Parameters &params);
+grpc::string GetSourceEpilogue(grpc_generator::File *file, const Parameters &params);
 
 }  // namespace grpc_cpp_generator
 

grpc/src/compiler/schema_interface.h

@@ -0,0 +1,108 @@
+/*
+ *
+ * Copyright 2015, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_INTERNAL_COMPILER_SCHEMA_INTERFACE_H
+#define GRPC_INTERNAL_COMPILER_SCHEMA_INTERFACE_H
+
+ #include <memory>
+ #include <vector>
+
+ #ifndef GRPC_CUSTOM_STRING
+ #include <string>
+ #define GRPC_CUSTOM_STRING std::string
+ #endif
+
+namespace grpc {
+
+  typedef GRPC_CUSTOM_STRING string;
+
+}  // namespace grpc
+
+namespace grpc_generator {
+
+  // An abstract interface representing a method.
+  struct Method {
+    virtual ~Method() {}
+
+    virtual grpc::string name() const = 0;
+
+    virtual grpc::string input_type_name() const = 0;
+    virtual grpc::string output_type_name() const = 0;
+
+    virtual bool NoStreaming() const = 0;
+    virtual bool ClientOnlyStreaming() const = 0;
+    virtual bool ServerOnlyStreaming() const = 0;
+    virtual bool BidiStreaming() const = 0;
+  };
+
+  // An abstract interface representing a service.
+  struct Service {
+    virtual ~Service() {}
+
+    virtual grpc::string name() const = 0;
+
+    virtual int method_count() const = 0;
+    virtual std::unique_ptr<const Method> method(int i) const = 0;
+  };
+
+  struct Printer {
+    virtual ~Printer() {}
+
+    virtual void Print(const std::map<grpc::string, grpc::string> &vars,
+                       const char *template_string) = 0;
+    virtual void Print(const char *string) = 0;
+    virtual void Indent() = 0;
+    virtual void Outdent() = 0;
+  };
+
+  // An interface that allows the source generated to be output using various
+  // libraries/idls/serializers.
+  struct File {
+    virtual ~File() {}
+
+    virtual grpc::string filename() const = 0;
+    virtual grpc::string filename_without_ext() const = 0;
+    virtual grpc::string message_header_ext() const = 0;
+    virtual grpc::string service_header_ext() const = 0;
+    virtual grpc::string package() const = 0;
+    virtual std::vector<grpc::string> package_parts() const = 0;
+    virtual grpc::string additional_headers() const = 0;
+
+    virtual int service_count() const = 0;
+    virtual std::unique_ptr<const Service> service(int i) const = 0;
+
+    virtual std::unique_ptr<Printer> CreatePrinter(grpc::string *str) const = 0;
+  };
+} // namespace grpc_generator
+
+#endif  // GRPC_INTERNAL_COMPILER_SCHEMA_INTERFACE_H

src/idl_gen_grpc.cpp

@@ -24,7 +24,7 @@
 
 namespace flatbuffers {
 
-class FlatBufMethod : public grpc_cpp_generator::Method {
+class FlatBufMethod : public grpc_generator::Method {
  public:
   enum Streaming { kNone, kClient, kServer, kBiDi };
 
@@ -62,7 +62,7 @@ class FlatBufMethod : public grpc_cpp_generator::Method {
   Streaming streaming_;
 };
 
-class FlatBufService : public grpc_cpp_generator::Service {
+class FlatBufService : public grpc_generator::Service {
  public:
   FlatBufService(const ServiceDef *service) : service_(service) {}
 
@@ -72,8 +72,8 @@ class FlatBufService : public grpc_cpp_generator::Service {
     return static_cast<int>(service_->calls.vec.size());
   };
 
-  std::unique_ptr<const grpc_cpp_generator::Method> method(int i) const {
-    return std::unique_ptr<const grpc_cpp_generator::Method>(
+  std::unique_ptr<const grpc_generator::Method> method(int i) const {
+    return std::unique_ptr<const grpc_generator::Method>(
           new FlatBufMethod(service_->calls.vec[i]));
   };
 
@@ -81,7 +81,7 @@ class FlatBufService : public grpc_cpp_generator::Service {
   const ServiceDef *service_;
 };
 
-class FlatBufPrinter : public grpc_cpp_generator::Printer {
+class FlatBufPrinter : public grpc_generator::Printer {
  public:
   FlatBufPrinter(std::string *str)
     : str_(str), escape_char_('$'), indent_(0) {}
@@ -133,7 +133,7 @@ class FlatBufPrinter : public grpc_cpp_generator::Printer {
   int indent_;
 };
 
-class FlatBufFile : public grpc_cpp_generator::File {
+class FlatBufFile : public grpc_generator::File {
  public:
   FlatBufFile(const Parser &parser, const std::string &file_name)
     : parser_(parser), file_name_(file_name) {}
@@ -163,13 +163,13 @@ class FlatBufFile : public grpc_cpp_generator::File {
     return static_cast<int>(parser_.services_.vec.size());
   };
 
-  std::unique_ptr<const grpc_cpp_generator::Service> service(int i) const {
-    return std::unique_ptr<const grpc_cpp_generator::Service> (
+  std::unique_ptr<const grpc_generator::Service> service(int i) const {
+    return std::unique_ptr<const grpc_generator::Service> (
           new FlatBufService(parser_.services_.vec[i]));
   }
 
-  std::unique_ptr<grpc_cpp_generator::Printer> CreatePrinter(std::string *str) const {
-    return std::unique_ptr<grpc_cpp_generator::Printer>(
+  std::unique_ptr<grpc_generator::Printer> CreatePrinter(std::string *str) const {
+    return std::unique_ptr<grpc_generator::Printer>(
           new FlatBufPrinter(str));
   }